High mannitol process (alkaline hydrogenation in presence of alk

Details High mannitol process (alkaline hydrogenation in presence of alk High mannitol process (alkaline hydrogenation in presence of alk

1979-07-13

1981-09-29

Evans, Joseph E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

435 94, C07C 3126, C12P 1924

Patent

active

042924510

ABSTRACT:
Sugar mixtures comprising glucose and either mannose, or both, are catalytically hydrogenated in aqueous solution containing 0.2-1.5% by weight (based on sugar) of sodium carbonate or other basic reacting alkali metal salt, yielding mannitol-rich solutions of sorbitol and mannitol. Hydrogenation is preferably carried out in two stages, the first at temperature of about 60.degree.-100.degree. C., the second at temperatures of about 110.degree.-160.degree. C.

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Bilik et al., "Angew. Chem.", International Edition in English, vol. 10, Jul.-Dec. 1971, p. 909.
Bilik, "Chem. Abstracts", vol. 79, (1973) 146807w.
Takemura et al., "Chem. Abstracts", vol. 85 (1976) 107492u.

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